Quantifying the effect of swab pool size on the detection of influenza A viruses in broiler chickens and its implications for surveillance

Table 2 Summary results on positive proportions and virus titer present for the single-swab samples for only samples with CT ≤ 35 totaling n = 43 and 62 for H5 and H7 viruses respectively^a

Test	Subtype	Number positive (%)	Mean virus titer for LFI detected samples in EID₅₀/ml	Lowest virus titer for LFI detected samples in EID₅₀/ml
FluDETECT	H5	16 (37%)	10^2.98	10^2.32
FluDETECT	H7	36 (58%)	10^3.62	10^2.65
VetScan	H5	12 (28%)	10^3.03	10^2.39
VetScan	H7	26 (42%)	10^3.73	10^2.65

^aFor all PCR positive single-swab samples (i.e., those with CT ≤ 35), the mean virus titer was 10^2.43EID₅₀/ml and 10^3.73EID₅₀/ml for the H5 and H7 viruses respectively

ISSN: 1746-6148